> For the complete documentation index, see [llms.txt](https://knowledge.flyability.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge.flyability.com/getting-started/start-with-payloads-and-accessories/start-with-gas-payload.md).
# Start with Gas payload
With the Flammable Gas Sensor mounted on the Elios 3, operators can reliably detect +14 fl ammable gases (including hydrogen), reducing risks during confi ned-space inspections. Factory-calibrated and equipped with built-in self-testing, the Flammable Gas Sensor requires no fi eld calibration, ensuring continuous, fail-safe operations in even the harshest industrial environments.
| What's in the box | Elios 3 Flammable Gas Sensor Payload |
| -------------------------- | :----------------------------------: |
| Flammable Gas Sensor | 1 |
| Sensor mount | 1 |
| Bump test tool | 1 |
| Silicon tube 400mm | 1 |
| Dust filter for Gas Sensor | 3 |
| Transport case | 1 |
***
{% content-ref url="/pages/rnjLAHqXBcNM24u2NfWM" %}
[Flammable Gas sensor](/aircraft/elios-3/elios-3-payload/flammable-gas-sensor.md)
{% endcontent-ref %}
{% hint style="info" %}
We have an online training/tutorial to help you mount and understand how to use the gas sensor.
This training in on our Flyability Academy or can be reached directly via this [link](https://flyabilityacademy.thinkific.com/courses/Gassensor)
{% endhint %}
---
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